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Enviroment is for pc details, use the summary instead.
This has already been reported a couple of times.
"There is block data for stairs and obsidian" by reading the title it doesn't sound like a bug, in the future try and make the issue more clear, also what's with the obsidian, you never mention it.
[Mod] Neko
I would mark this as Incomplete as explanation of bug wasn't clear.